Permanent magnet for an electric machine and method of making the same

A permanent magnet for use in an electric machine, wherein the permanent magnet has a magnet thickness and extends along a magnet axis, wherein the permanent magnet defines a groove extending axially along the magnet axis that has a groove depth that is less than the magnet thickness, wherein the groove has a zig-zag configuration with respect to the magnet axis.

A permanent magnet for use in an electric machine, wherein the permanent magnet has a magnet thickness and extends along a magnet axis, wherein the permanent magnet defines a groove extending axially along the magnet axis that has a groove depth that is less than the magnet thickness, wherein the groove has a non-straight configuration with respect to the magnet axis, and wherein the groove has a first groove section extending axially along the magnet axis, and a second groove section extending along the magnet axis parallel to the first groove section, wherein the first and second groove sections have a zig-zag configuration.

A permanent magnet for use in an electric machine, wherein the permanent magnet has a magnet thickness and extends along a magnet axis, wherein the permanent magnet defines a groove extending axially along the magnet axis that has a groove depth that is less than the magnet thickness, wherein the groove has a non-straight configuration with respect to the magnet axis, and wherein the groove has a first groove section extending circumferentially about the magnet axis, and a second groove section extending circumferentially about the magnet axis parallel to the first groove section, and wherein the first and second groove sections have a zig-zag configuration.